Struct PrevWalkMetrics 

pub struct PrevWalkMetrics {

    pub entered: u64,
    pub gapped: u64,
    pub held: u64,
    pub closed: u64,
    pub fetch_failed: u64,
    pub fetch_cancelled: u64,
    pub walked: u64,
    pub walked_prevs: u64,
    pub capped: u64,
    pub appended: u64,
    pub not_appended: u64,
    pub failed: u64,
    pub cancelled: u64,
    pub unprocessed_prevs: u64,
}

Snapshot of process-lifetime totals for incoming previous-event walks.

Every gapped event ends as exactly one of held, closed, fetch_failed, fetch_cancelled or walked, and every walk as exactly one of appended, not_appended, failed or cancelled. Each counter is loaded independently, so totals within one snapshot need not reconcile while passes are in flight.

Fields

entered: u64

Top-level incoming timeline events that reached the gap check, whether from a federation transaction, a join, an invite or backfill.

gapped: u64

Events with a previous event missing from the timeline.

held: u64

Gapped events withheld by a backoff hold.

closed: u64

Gapped events whose previous events all reached the timeline during the backward fetch, leaving nothing to walk.

fetch_failed: u64

Gapped events whose backward fetch returned an error.

fetch_cancelled: u64

Gapped events dropped before their walk began, or whose backward fetch was interrupted.

walked: u64

Passes that walked previous events missing from the timeline.

walked_prevs: u64

Previous events collected for upgrade by walking passes.

capped: u64

Passes whose walk hit the max_fetch_prev_events cap.

appended: u64

Passes that appended the incoming event.

not_appended: u64

Passes that finished without appending the incoming event.

failed: u64

Passes that returned an error.

cancelled: u64

Passes dropped before they settled or interrupted by shutdown.

unprocessed_prevs: u64

Collected previous events left without an upgrade by passes that were not cancelled.

Trait Implementations

impl Clone for PrevWalkMetrics

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for PrevWalkMetrics

impl Debug for PrevWalkMetrics

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for PrevWalkMetrics

fn default() -> Self

Returns the “default value” for a type.

impl Eq for PrevWalkMetrics

impl PartialEq for PrevWalkMetrics

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PrevWalkMetrics